Thread: Few Questions

this is from the whipple website.

The Whipple twin-screw supercharger is actually a compressor, which means it compresses air internally as well as compressing it in the manifold. Because the screw compressor compress’s the air inside the case, air enters into the pressurized environment with very little leakage or energy loss. A roots-type supercharger sweeps atmospheric air into the manifold and is compressed in the manifold only. With manifold pressure, air leaks back through the rotors causing air to be heated. Roots-type uses Teflon to try and seal the rotors to cure this, but touching tolerances cause more frictional heat and greater parasitic losses. This problem is multiplied when boost levels rise or sustained in-boost periods. Automotive and Marine roots-type superchargers have more tolerances between the rotors and case so they live longer, but this causes more leakage back through the rotors. A screw compressor has very tight tolerances between the rotors. The rotors never touch, eliminating big parasitic and frictional losses as well as keeping the same performance year after year.

The two types of superchargers have different performance characteristics that have led to several debates on which supercharger is preferable. Proponents of roots blowers argue that more boost is available at lower RPM to provide off the line acceleration. Centrifugal supercharger enthusiasts argue that roots blowers are limited at higher RPMs and can increase air temperature and decrease horsepower. Whipple Superchargers offer significant horsepower at low RPMs with superior mid and high RPM performance. In situations where you demand performance from your vehicle, you are spending most of the time in the mid to high RPM ranges.


i havent seen the zzp testing and if youtube would work at the moment i would find the video. stock grandprix dyno 330hp 440tq to the wheels. ive never seen a stock genV grand prix come close to that.

again a whipple blower is miles ahead of a eaton.

whipple + grand prix = $15,000 setup.

not worth the money.

but to compare a whipple to an eaton is silly...

prj whipple car. 537hp.
YouTube - 1999 GTP with Whipple W140AX - 537 WHP

im not saying to take the whipple route, just stating a whipple is miles ahead of an eaton.

Originally Posted by Bio248

fast doesnt complete my thought. think of horsepower or 1/4 mile times.

do you want to beat up on ricers and run low 13s/high 12s? do you want to blow the doors off corvettes? where do you want to be in this situation?

either way transmission work is pretty necessary after driving at that power level since youll toast clutches/torque converters/etc. your stock tranny will last a while, but youll blow it up quicker if you drive like a douche.

toast that input shaft too... it will take as much abuse as the rest...

don't slouch on them... get 300M

Well you have to work at it but yes, everything he listed will work on your L67. As for Input Shafts...Have Dave install them when you get a Triple Edge Performance Transmission

*RANT*I doubt it would cost $15,000 but from after talking to Tom and Paul about the Whipple setup and Robotec on here (WHO HAS ONE) you jsut have to know how to tune for it. Reason people blow **** up is because the Whipple creates SO much heat...hence why a Intercooler/Meth or whatever form of cooling route your going to use has to be VERY efficient. Tom ran a Whipple on his stock GTP with a Open cone intake and tune and put down 330HP. Only deficiency there is to keep KR levels down he ran a 4.5" pulley. Using something that large put boost levels too low to make the Whipple work well enough into it's "sweet spot" since the Whipple is made to make LOTS O BOOST, I've had buddies with them on Cobra's running upwards of 22+psi, granted they can handle it. I'm just coming from the standpoint if I had Ten Grand to waste...I'd put it into a Forged Bottom End, Heads, Cam, IC/Meth, 60#'s and get the damn Whipple. I love the sound, I like the idea and you can't argue the thing makes power. In a way I like to compare it to the NIC Cam. They both make crazy power but at a risk...the Whipple is very hard to tune for just like the NIC Cam, which many people (And even ZZP contested to it) that an improper tune with take out a car with only a 3.4" pulley on it...it is just the fact I think it is a really cool concept and would love to do it someday...I just suggested it thinking I'm not the only one who would want to do it, but meh...whatever.*END RANT*

Heads, Cam, IC/Meth, TB, Headers, Tune, Smaller Pulley, Intake, GenV, Injectors, and a Tranny...

Details is up to you. Heads can be pricey so I'd look around and make sure you know who is doing them...that is one thing you NEVER want to skimp on if your gonna do a build. Intense-Racing does great head work too IMO. Ed Morad (Morad Parts Company) can also help you out with any 3800 part you might need.

I'm starting to port and polish heads as well.. been fooling with some warped cores for practice...I'm going to do my heads here soon and see how they work... I'm also getting pretty good at tuning...

If you're ever in the MD area let me know I can help you out.

Depends on your other supporting mods...probably anywhere from 10-20HP with just the blower and a stock pulley. You'll see more gains as the GenV is much more efficient that your GenIII that you currently have stock. Plus in the long run the GenV creates less heat, doesn't have as much parasitic loss as the GenIII and...you don't have to run such a small pulley (eg: spinning the blower so much) to net as much, if not more HP than your GenIII.

Originally Posted by shape275

hey bio everything you said would fit in my 99 gtp?

yep.

Originally Posted by blowfishRus6

im not saying to take the whipple route, just stating a whipple is miles ahead of an eaton.

That's because it's more expensive. Eaton knows what they're doing and are making bang for buck blowers for OEM uses. Even trying to compare them is like comparing the ZR1 to a Malibu.

Originally Posted by Jess3103

hehehe.....I am one of those who slapped the whipple on thinkin my other mods would work....three days later I was getting a intercooler..LOL

It ran for 3 days without an IC??!!??!

as much as i want to believe that you had a whipple on your car im not sure i can. there is like a grand total of like 20 people that have ever gone that far with a grand prix to try and put a whipple on it. hell, the mp112 hybrid setup was more popular.

im not doubting you, it just seems far fetched to me.

Originally Posted by Sabrewings

That's because it's more expensive. Eaton knows what they're doing and are making bang for buck blowers for OEM uses. Even trying to compare them is like comparing the ZR1 to a Malibu.

true. and eatons are very good for that purpose. but nobody said anything about price, just hp numbers, which the whipple will out shine an eaton anyday in that catagory.